Fix cloud-init insertion with v3 IM

Change-Id: Ia7657f255ff0f10d2bd1cfa934e2d15b89ef187b
Signed-off-by: gcalvino <guillermo.calvinosanchez@altran.com>
diff --git a/osm_ro/vimconn.py b/osm_ro/vimconn.py
index 1f6c4d1..1fbce19 100644
--- a/osm_ro/vimconn.py
+++ b/osm_ro/vimconn.py
@@ -33,6 +33,7 @@
 import socket
 import StringIO
 import yaml
+import sys
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText